2021-09-30 App synchronization issue

Until 07:45 this morning, there was an app sync glitch that resulted in a message that our SSL certificate had expired. This was misleading in that the certificate was valid. However, there was a change to the issuer's root certificate that ultimately led to this message. The certificate chain could be restored, synchronization in the apps are possible again. We are very sorry for the outage and thank you for your understanding!